What is one application of non-destructive testing in aviation?

Non-destructive testing (NDT) serves a crucial role in aviation, particularly with its primary function being to inspect materials or components for defects without causing any damage to them. This method allows for the examination of aircraft structures and components, such as wings, fuselage, or engine parts, without compromising their integrity. By using various techniques like ultrasonic testing, radiographic testing, or magnetic particle testing, inspectors can identify issues such as cracks, corrosion, or other structural anomalies that could affect safety and performance. This capability is essential in maintaining airworthiness and ensuring that aircraft meet stringent safety regulations.

The other options highlight important aspects of aviation but do not specifically pertain to the core principle of non-destructive testing. For instance, checking for leaks in fuel systems involves testing methods that might not be non-destructive. Determining fuel efficiency requires performance analysis rather than structural inspection, and assessing passenger safety features typically includes design evaluations and safety procedures rather than the examination of materials for defects.